Street-sweeping machine.



A. E. DAVIS & c. H. PEDDRICK, In.

STREET SWEEPING MACHINE.

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A. E. DAVIS & c. H. PEDDRICK, JR-

STREET SWEEPING MACHlNE.

APPLICATION FILED MAR. n. 1913.

Patented Aug. 3, 1915.

4 SHEETS-SHEET 3- Inventors" 2% :5 r6

A. E. DAVIS & C. H. PEDDRICK, JR.

STREET SWEEPIN G MACHINE.

APPLICATION FILED MAR. 17. 1913.

Patented Aug. 3, 1915.

4 SHEETS-SHEET 4- 20237125565.- In vcni-ary D W35 WM@% nnirnn s'rarns Parana orrrcn.

ALBERT E. DAVIS, OF TROY, AND CHAR-LES H. PEDDRICK, IB 01? GREEN ISLAND,

NEW YORK.

STREET-SWEEPING MACHTNE.

Application filed March 17, 1913.

To all whom it may concern Be it known that we, ALBERT E. DAVIS and CHARLES H. PEDDRICK, J12, citizens of the United States, said DAVIS residing at Troy, countyv of Rensselaer, and State of New York, and said Pnoonron residing at Green Island, .county of Albany, and State of New York, have invented certain new and useful Improvements in Street-Sweeping Machines, of which the following is a specification.

The invention relates to such improvements and consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

Reference may behad to the accompanying drawings, and the reference characters marked thereon, which form a part of this specification. Similar characters refer to similar parts in the several figures therein. Figure 1 of the drawings is a view in side elevation of our improved street-sweeping machine. Fig.- 2 is a similar view on a larger scale with the front part of the machine broken away and the rear draft-wheel removed on the near side. Fig. 3 is a' view partly in side-elevation and partly in section showing thev pawl-and-ratchet mechanism on-one side of the machine for driving the brush. Fig. 4 is a top plan view of the machine with'the front part broken away, and the hoods partly broken away, and part of the casing shown in horizontal section. Fig. 5 1s a vertical longitudinal section taken on the broken line 5-5 in Fig. 4:. Fig. 6 is a cross-section, showing the adjustable dust-guard for the openingin the casing which permits adjustment ofone of the'cross-shafts. Fig. 7 isa vertical crossscction taken on the broken line'77 in Fig. 2, showing in front elevation the lower ends of the removable cans for the sweepings, and the adjustable support upon which they are mounted.

The principal object of the invention is to provide a strong, serviceable sweepingmachine adapted to be propelled by horse or other power, and having brush-mechanism which can be readily controlled by the driver, and which can be conveniently adjustedto compensate for wear.

Other objects will appear in connection with the following description.

ftteferring to the drawings wherein the irr- Serial No. 754,823.

vention' is shown in preferred form, the body of the machine comprises a casing, 1 of heavy sheet-metal mounted upon a pair of substantially A-shaped metal side-frames, 2, which form the reach, the front legs, 3, of the side-frames connecting with the bolster, 15, mounted in the usual manner upon the front axle, 1, supported upon front wheels, 5, in connection with a pole or tongue 6.

The rear wheels, 8, are rotatively mounted upon separate short axles, 7, each projecting from an upright, 7*, extending from a bottom side-rail, 10, to the side-frame 2.

The cross-bar, 9, of each A-shaped sideframe forms a brace'for the frame; and the bottom side-rails, 10, extend forwardly from the ends ofthe rear legs, 11, of the side-frames to a point below the forward end of the casing, whereat they are supported byuprights, 12, in connection with the respective cross-bars 9. The front ends of the side-rails, 10, are in integral connection with a cross-rail, 1 1, thus forming a bottom frame. Braces,.13, extend convergently upward from thebolster, 15, and the front-rail, 1.41, of the bottom-frame to form a support for the seat The bottom-wall, 16, of the sheet-metal casing forms an inclined plane extending upwardly and forwardly to one or more chutes or openings, 18, adapted to receive the sweepings. A rearwardly facing dustpan, 19, is connected with the bottom-wall, 16, ofthe casing by means of a transverse horizontal hinge, 20, whereby said dust-pan is adapted to swing toward and from the ground. The dust-pan, 19, is curved in cross-section so that its rear end is adapted to engage the ground at a favorable angle to receive the sweepings. The sweepings are swept upon the dust-pan, 19. and up the inclined'wall, 16, to the chute, 18, by means of an endless flexible brush comprising numerous brush-blocks, 22, carried by a pair of endless chains, 23, whichfipass over the respective sprocket-wheels, 24, and 25. The lower rear sprocket-wheels, 24, are fixed upon a cross-shaft, 26, each end of which is mounted in a bearing-box, 27, sliclably mounted in a bracket, 28, adjustably fixed upon the rear leg,11, of the neighboring side-frame by means of bolts, 29, passing through slots, 30, in the arms of the bracket,

Specification of Letters Patent. Patented Aug, 3, 1915,

into said leg 11. The upper front jsprocket wheels, 25, are fixedupon a cross-shaft,31,

each end of which is mounted in a bearingbox,;32, slidably mounted in a bracket, 33, adjustably'fixed upon the neighboring sideframe by means of bolts, 3 1, passing through slots, 35, in the arms of the bracket, into said frame. The brackets, 28 and 33, are so ad- "jus'ted'tha't their slideways are in line with each other and support the respective bearing-boxes, 27 and 32, so that the ends of the V .-br.ushes will contact with the inclined wall 16. As the brushes wear, the brackets can be adjusted to move the shafts, 26 and 31, with their b earing-boxes, nearer to the wall,

16, to.cfompensate for the reduced length ofthe brush stock. 7

The, bearing-boxes, 27 and 32, on the same side of themachine are heldin fixed relation to each. other by means of a bar, 36, opposite ends'of which are adjustably mounted in slideways, 37, formed on the respective bearing-bbxes, the ends of the'bar being secured in adjusted position in said slideways by means of clamp-pl'ates '39. Adjustment of the bar, 36, can-be made from time to time to compensate for stretch of the chain, 23,

thus making it possible to maintain said chain at the proper tension.

The brush-mechanism is supported at the proper elevation to either engage the ground or to clear the ground, as desired, by means of cables, 40, connected with the respective bars, 36, and passing over the respective pulleys, 41, on the side-frames to a drum or cross-shaft, 42,'rotatively mounted upon the v side-frames upon which drum or cross-shaft the'c ables are adapted to be wound, The

I cables, &O, are wound upon the shaft, 412, by

means sofa ratchet, 43, fixedupon the shaft and adapted to be intermittently engaged by the pawl, 44?, carried by a,hand-lever, 45,

adapted toibe operated by the driver of the machine. The [unwinding of the cables is controlled by a forked escapement-lever pivoted at, 46, upon the casing and having on its respective arms, dogs, 47, adapted to alternately engage the, ratchet teeth as the eseapement-lever is rocked. upper arm, 48, of theesc'apement-lever is in the path of the base of the pawl, hand said pawl is connected by a link, 49, wijth angle-lever,

50, onthe hand-lever, 4L5, so that thedriver can, by means of the lever, 50, withdraw the pawl, and by. alternately raising and lowering the hand-lever, 45, he can, by the engage- Inent' of the base of the pawlwith the arm,

48, rock the escapement-lever to permit a stepby-step unwinding movement of the shaft 42. The brush can thus be raised out of contact with the ground whenever desired, as in backing the machine or in traveling over surfaces which are not to be swept.

(e have shownmeans for raising and vansvi e i sep n n, c da e w the raising and lowering of the brush, said 7 slipping beneath its pawl.

means consisting of cables, 90,- connecting l the opposite side edges'of the dust-pan with the respective bars, 36, said cables engaging grooved-rollers, 91, rotatively mountedon the respective axles 7; p

As the bars, 36, and bearing-boxes, 27 and 32, are raised and lowered, the pull of the cables, 90, will correspondingly raise andlower the dust-pan. a

For certain purposes of the invention, the brush may be operated in any known manner.

576 have shown apreferred means for driving the brush from the rear i draftwheels. Fixed upon the hub of each rear-V wheel, 8, is a sprocket-Wheel, 52, connected by chain, 53, with a sprocket-wheel, 5 1, ro-

tatively mounted in fixed relation to a gearwheel, 55,.upon a cross-shaft, 56, supported by brackets, 57, on the casing, The gearwheels, 55, engage the respective [gearwheels, 58, rotatively mounted upon the opposite ends of a cross-shaft,g59, upon each end of which cross-shaft is fixed aratchet,

60, adapted to be engaged by a pawl, 61, carried by the neighboring gear, 58f The cross-shaft, 59, is rotatively mounted upon a pair of links, 62, which are rotatively'moun'tedon the cross-shaft, 56, whereby the shaft,

59, is permitted an oscillating movement Without interfering with the proper meshing of the gears, 55 and 58. A sprocket-wheel, 63,'fixed upon the crossshaft, 59, is connect- 7 ed by chain, 61, witha sprocket-wheel, 65, fixed upon the cross-shaft 31; It will thus 'beseen that by'meansrofthe pawl and ratchetmechanism,n61 and 60, the cross' shaft, 59, can be driven by elther rearwheel, 8, independently of the other rearlapping members, 70, adjustably secured to- 1 gether bybolts, 71, passing through slots in 1 one member, into the other, ermitting the adpistment necessary to take up the slack of the chain, 64, from time to time. The crossshaft, 59, thus travels with the cross-shafts, 31 and26, asthe brush is raised and lowered, but without interfering with the proper meshing of the gears, 55 and 58, due to' the mounting of the shaft, 59, upon the pivoted links,'62, as above describe V The side Walls of the casing are-provided with suitable openings therethrough to permit the movements of adjustment of the respective cross-shafts, 26, 31 and 59, which openings, 92, may be closed by means of slide-plates, 72, carried by the respective shafts and of suflicient area to at all times close said openings to prevent the escape of dust therefrom.

Upon the bottom frame formed by the side-rails, 10, and front-rail, 14, we removably support one or more receptacles, 73, for the sweepings, such receptacles having an upper open end in communication with the chute, 18. Such receptacle is preferably in the form of a metal-can adapted to telescopically engage with the lower end of the chute, 18, as shown in Fig. 4. The can, 73, rests upon a vertically adjustable bed formed by a pair of channel-irons, 74, each having at its opposite ends a pair of guidepins, 75, vertically movable in slideways, 76, on the side-plates 10. The channel-irons, 74, are adapted to be engaged by cams, 77 fixed upon a pair of rock-shafts, 78, upon which rock-shafts are also fixed rocker-arms, 79, connected together by a link, 80, whereby both rock-shafts rock in unison. One of the rocker-arms, 79, is extended to form a handle 81. A toothed-pivoted dog, 82, carried by the link, 80, is adapted to support the cams, 77, in raised position, in which raised position the bed formed by the channelirons, 74, supports the can, 73, in telescopic engagement with the chute 18.

When it is desired to remove the can, 73, the dog, 82, is released and the shafts, 78, are rocked by means of the handle, 81, to withdraw the cams and permit the channel-irons, 74, to descend to the level of the side-plates, 10, thus releasing the can from its telescopic engagement with the chute, 18, and permitting it to be removed at one side of the machine.

Rotatively mounted keepers, 83, may be provided to prevent accidental displacement of the can sidewise of the machine.

The can is confined between the link, 80, and an upright plate, 84, between which the can is slid in inserting or removing it.

In use, the can, 69, forms a practically tight joint with the chute, 18, preventing the escape of dust.

For convenience of handling the sweepings, a. plurality of cans of a total width substantially equal of that of the casing, are employed in preference to a single can having equivalent length; and in Fig. 7, we have shown three cans, 73, supported by the adjustable bed, 74; and in Fig. 4, we have shown the casing provided with three chutes, 18, with which these cans respectively engage. The casing is provided with a rear-hood, 86, hinged at, 87, and with a front-hood or cover, 88, hinged at 89, said hoods being adapted to be swung upward to the position. indicated by dotted lines in -Fig. 1, to afford free access to the interior tending along the opposite sides of thedust-v pan. I

By employing separately depending strands of rope, the bottom edge of the skirt is adapted to conform to the irregularities in the roadbed, making a closer and more eflective contact therewith than is possible with a strip of canvas or other sheet-material. This form of skirt also permits ready connection of the dust-pan-raising mechanism with the dust-pan, such connection being made through the skirt, between the strands, permitting the dust-pan-raising mechanism 90 to be located outside of the skirt.

What we claim as new and desire to secure by Letters Patent is 1. In a sweeping-machine, and in combination, a wheel-supported casing having an upwardly inclined bottom surface; an endupon the carrier; guides mounted upon the casing extending substantially parallel with said inclined bottom surface; and mechanism adjustable along said guides for supporting and driving saidbrush-carrier.

2. In a sweeping-machine, and in combination, a wheel-supported casing having an upwardly inclined bottom surface; an endless flexible brush-carrier; brushes mounted upon the carrier; guides mounted upon the casing extending substantially parallel with said inclined bottom surface with capability for adjustment toward and from the plane of said inclined bottom surface; and mechanism adjustable along said guides for sup porting and driving said brush-carrier.

8. In a sweeping-machine, and in combination, a wheel-supported casing having an upwardly inclined bottom surface; a dustpan movably mounted at the lower end of said bottom surface; brush-mechanism comprising an endless flexible brush-carrier and numerous brushes mounted upon the carrier; means for supporting and driving said brush-carrier to move the brushes upward along said dustpan and said inclined bottom surface; means for raising and lower-- ing said brush-mechanism relatively to, and along said inclined bottom surface; a cable connecting said dust-pan with said brushmechanism; and a member over which said cable changes direction.

4. In a sweeping-machine, and in combination, a wheel-supported casing havingan upwardly inclined bottom-surface; brush-' less flexible brush-carrier; brushes mounted 5 mechanism comprising an endless flexible brush-carrier and brushes mounted thereon;

an upper and a lower shaft; sproclret wheels on the respective shafts over which said endless brush-carrier passes; an upper slideway and a lower slideway on each side of the machine in a plane approximately parallelwith said inclined bottom-surface;

bearing-boxes for the upper shaft movable I along'the upper ofsaid slideways; bearingboxes for the lower shaft movable along the lower of said slideways; means for driving the brush-mechanism; and means for causing a sliding movement of the bearing-boxes along their respective slideways, whereby the brush-mechanism is raised and lowered along said inclined bottom-surface.

5. In a sweeping-machine, and in combination, a wheel-supported casing having an upwardly inclined bottom-surface; brushmechanism comprising an endless flexible brush-carrier and brushes mounted thereon an upper shaft and. a lower shaft; sprocketwheels on the respective shafts over which said endless flexible brush-carrier passes; an upper slideway and a lower slideway on each side of the machine in a plane approximately parallel with said inclined bottomsurface; bearing-boxes for the upper shaft movable along the upper of said slideways; bearing-boxes for the lower shaft movable along the lower of said slideways; an adjustable rigid connection between the upper and lower bearing-boxes :on each side of the parallel with said inclined bott'omsurface;- bearing-boxes for the upper shaft movable I along the upper of said slideways; bearingboxes for the lower shaft movable along the lower of said slideways; an adjustable rigid connection between the upper and lower bearing-boxes on each side of the machine; means for driving the brush-mechanism; a ratchet; a rotatively mounted shaftupon whichsaid ratchet is fixed; cable-connections between said ratchet-shaft andtherigidly connected bearing-boxes on'opposite sides of themachine; a lever-actuated pawl engageable with said ratchet to wind the. cables upon said ratchet-shaft; and" an escapement-mechanis'mfor controlling the? unwinding movement of said ratchet-shaft."

7; In a sweeping-machine, and in combination, a wheel-supported casinghavingan upwardly inclined: bottom-surface; brushmechanism comprising an endless flexible. brush-carrier and brushes mounted thereon; an upper shaft and a lower shaft; sprocketwheels on the respectiveishafts" over which said endless brush-carrier passes; bearing boxes for the respective upper and lower said endless brush-carrier passes; bearingg boxes for the respective upper and lower" shafts; brackets on opposite sides of the ma: chine adjustable toward and from said 'in-' clined surface and provided with inclined slideways along which the respective bearing-boxes are movable substantially paral-' lel with said inclined bottom-surface; means for driving said brush-mechanism; a rigid connection between the bearing-boxes for the upper and lower shafts on eachside of the machine; cables connected with the rigidly connected bearing-boxes on each side of the machine; and means for winding and unwinding'said cables to raise'an d lower the brush-mechanism along said inclined "bottom-surface; I l I 9. In a sweeping-machine, and'in'com'bi-Y' nation a casing'having an upwardly'inclined bottom-surface; draft-wheels. upon which said casing is mounted; brush me chanism comprisingan endless'fiexible brushcarrier' and'brush'es mounted thereon; upper 5 and lower shafts; sprocket-wheels on the which said endless brushcarrier passes;

I bearings for the respective upper and lower shafts movable substantially parallel with respective upper and lower shafts over said upwardly inclined surface; means for j moving said bearings and shafts to' raise and lower the brush-mechanism alongtheinclined surface; a driven sprocket-wheel v fixed upon oneof said: shafts; an 1 terme d1 ate shaft; a'sprocket-wheel on" said inter} med iate jshaft; a chain connecting the sprockebwheel on the intermediate"' shaft with said driven sprocket-wheel;link-0on1 Y mamas" between said intermediate shat-61 9' and the shaft carrying said driven sprocketwheel; gear-wheels on opposite sides of the machine driven from the respective draftwheels; link-mechanism pivoted concentrically with said gear-wheels and having bearings for said intermediate shaft; and gear-wheels on said intermediate shaft driven by the respective draft-Wheel-driven gear-wheels.

10. In a sweeping-machine, and in combination, a Wheel-supported casing having an upwardly inclined bottom-surface; a dustpan at the lower end of said inclined surface; brush-mechanism movable upwardly along said dust-pan and said inclined surface; a skirt formed of closely arranged flexible strands depending from the casing along the opposite sides of said dust-pan; dust-pan-raising mechanism located outside travels; and a dust-confining skirt adjacent to the point of engagement of said sweeping-mechanism with said surface, said skirt comprising closely arranged flexible separately depending strands.

In testimony whereof, we have hereunto set our hands this 5th day of March, 1913.

ALBERT E. DAVIS. CHARLES H. PEDDRICK, JR.

Witnesses:

ROSE A. LEDUC, GERTRUDE M. Prrz.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

